WO2013078804A1 - 一种植物体内压力检测装置 - Google Patents

一种植物体内压力检测装置 Download PDF

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Publication number
WO2013078804A1
WO2013078804A1 PCT/CN2012/073014 CN2012073014W WO2013078804A1 WO 2013078804 A1 WO2013078804 A1 WO 2013078804A1 CN 2012073014 W CN2012073014 W CN 2012073014W WO 2013078804 A1 WO2013078804 A1 WO 2013078804A1
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Prior art keywords
unit
single chip
usb interface
chip microcomputer
pressure
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PCT/CN2012/073014
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English (en)
French (fr)
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陈勇
程月波
朱建军
柏新富
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鲁东大学
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Publication of WO2013078804A1 publication Critical patent/WO2013078804A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/086—Means for indicating or recording, e.g. for remote indication for remote indication

Definitions

  • the present invention relates to a detecting device, and more particularly to a plant body pressure detecting device.
  • Plants convert light energy absorbed into various organic substances by photosynthesis, and provide energy for living things on the earth, thereby ensuring the survival of various living things.
  • the strength of plant photosynthesis is closely related to its own growth.
  • the detection of water pressure in plants is just like measuring blood pressure in the human body. Therefore, it is of great practical significance to study the growth of plants.
  • US SEC's Plant Water Pressure Chamber 31 15 is a portable model. It is widely used in plant physiology, agronomy, irrigation, crop cultivation, plant nutrition and other research fields to reflect the overall water physiology of plants.
  • a leaf or a branch is placed in the sample chamber, and one end of the slit is exposed by a fixture.
  • the sample chamber is pressurized until the pressure exceeds the tension of the plant material and the leaf fluid begins to flow out of the incision. This pressure can be used to read the pressure in the plant directly from the pressure gauge.
  • the prior art can only test the pressure of water in plants, and can not detect the temperature, ambient temperature, ambient humidity and illuminance of the plants themselves, and the plants must be placed in the sample chamber for detection and complicated use.
  • the growth of plants is affected by the pressure of water in the plants and their own temperature.
  • the pressure of water in plants and their own temperature are affected by factors such as ambient temperature, humidity and illuminance. Therefore, the growth of plants is closely related to the pressure of water in plants, their own temperature, ambient temperature, ambient humidity, and illuminance. Therefore, if you want to study the growth of plants, you need to detect the internal pressure of the plant, its own temperature, ambient temperature, ambient humidity and illuminance.
  • the object of the present invention is to provide a plant body pressure detecting device for detecting various information such as internal pressure of a plant, self temperature, ambient temperature, environmental humidity and illuminance, in view of the deficiencies of the prior art, the structure of the device is single, Low cost and easy to use.
  • the plant body pressure detecting device of the present invention comprises a measuring unit, a single chip microcomputer, a DC-DC power converter, a USB interface unit and a computer connected in sequence, and the USB interface unit comprises a USB interface and a USB interface conversion in sequence with a bidirectional data connection.
  • the USB interface is bidirectionally connected to a computer, and the USB interface transmits the power provided by the computer to each component and the single chip in the measuring unit through a DC-DC power converter, wherein the measuring unit detects the signal and transmits the signal to the single chip microcomputer
  • the single-chip computer and the USB interface conversion circuit in the USB interface unit have a bidirectional data connection.
  • the plant body internal pressure detecting device has the advantages of simple structure, low cost and convenient use, and convenient and effective detection of various internal information such as plant internal pressure, self temperature, ambient temperature, environmental humidity and illuminance.
  • the present invention can also be improved as follows.
  • the measuring unit includes a temperature measuring unit, a pressure measuring unit, an amplifying unit, an environment detecting unit and an illumination detecting unit
  • the amplifying unit includes two instrumentation amplifiers and an amplifying circuit
  • the temperature measuring unit and the pressure measuring unit respectively
  • the detected signal is transmitted to the single chip microcomputer through an instrumentation amplifier
  • the environment detecting unit detects the temperature and humidity in the environment and transmits the detected signal or data to the single chip microcomputer
  • the light detecting unit passes the detected signal through the amplifying circuit. After amplification, transfer to the microcontroller.
  • the pressure measuring unit measures the pressure of water in the plant, converts the pressure into a voltage signal, and the voltage signal is amplified by the instrumentation amplifier and transmitted to the single chip microcomputer.
  • the single chip microcomputer includes at least three conversion units and a storage unit, and the conversion unit receives signals transmitted by the temperature measurement unit, the pressure measurement unit, and the illumination detection unit in the measurement unit, converts the signal into digital data, and saves the digital data to a storage unit, the storage unit stores data read and converted by the single chip.
  • the conversion unit of the single chip microcomputer is an A/D conversion unit.
  • the illumination detecting unit is constituted by a sensor.
  • the temperature measuring unit is composed of a thermistor or a thermocouple.
  • the pressure measuring unit is composed of a capillary glass electrode puller.
  • FIG 1 is a structural view of the apparatus of the present invention.
  • the principles and features of the present invention are described below in conjunction with the accompanying drawings, which are intended to illustrate the invention and not to limit the scope of the invention.
  • the plant body internal pressure detecting device comprises a measuring unit 1, a single chip microcomputer 2, a DC-DC power converter 3, a USB interface unit 4 and a computer 5 which are sequentially connected, and the USB interface unit 4 includes a USB interface 42 and a USB interface conversion circuit 41 of the bidirectional data connection, the USB interface 42 is bidirectionally connected to the computer 5, and the USB interface 42 transmits the power provided by the computer to the measurement unit 1 through the DC-DC power converter 3, respectively.
  • each component and the single chip microcomputer 2 each component of the measuring unit 1 transmits the detected signal to the single chip microcomputer 2, and the single chip microcomputer 2 and the USB interface conversion circuit 41 in the USB interface unit 4 are bidirectionally connected,
  • Each component of the measuring unit 1 detects the pressure of the water in the plant to be tested, the temperature of the measured plant body, the ambient temperature, the ambient humidity and the illuminance signal, and amplifies the signal, and then transmits the amplified signal to the single chip microcomputer 2, and the single chip microcomputer 2 receives
  • the signal transmitted by the measuring unit 1 converts the signal into digital data and stores it, and further transfers the digital data to the USB interface in the USB interface unit 4 in turn.
  • the change circuit 41 and the USB interface 42 are transferred to the computer 5, which sorts and displays the data, and the computer 5 sequentially transfers the current through the USB interface 42 and the DC-DC power converter 3 in the USB interface unit 4 .
  • the DC-DC power converter 3 can convert a fixed voltage into a different voltage required for each component in the measuring unit 1 and the single chip microcomputer 2.
  • the measuring unit 1 includes a temperature measuring unit 12, a load cell 13, an amplifying unit 15, an environment detecting unit 11, and an illumination detecting unit 14, and the amplifying unit 15 includes two instrumentation amplifiers 151. And an amplifying circuit 152, wherein the temperature measuring unit 12 and the load cell 13 respectively amplify the detected signal through an instrumentation amplifier 151 and transmit it to the single chip microcomputer 2, and the environment detecting unit 11 detects the temperature and humidity in the environment and The detected signal is transmitted to the single chip microcomputer 2, and the illumination detecting unit 14 transmits the detected signal to the single chip microcomputer 2 through the amplifying circuit 152.
  • the pressure measuring unit 13 measures the pressure of water in the plant, converts the pressure into a voltage signal, and transmits the voltage signal to the single chip microcomputer 2 through the instrumentation amplifier 151.
  • the single chip microcomputer 2 includes at least three conversion units and a storage unit, and the conversion unit receives signals transmitted by the temperature measuring unit 12, the pressure measuring unit 13 and the illumination detecting unit 14 in the measuring unit 1, converts the signals into digital data and converts the numbers
  • the data is saved to a storage unit that stores data that is read and converted by the microcontroller.
  • the conversion unit of the single chip microcomputer 2 is an A/D conversion unit.
  • the illumination detecting unit 14 is constituted by a sensor.
  • the temperature measuring unit 12 is composed of a thermistor.
  • the pressure measuring unit 13 is constituted by a capillary glass electrode puller.
  • each unit is first configured according to the device structure, the environment detecting unit 11 is placed in the air near the plant to be tested, the light detecting unit 14 is placed in the plant environment, and the temperature measuring unit 12 is placed on the blade of the plant, and the measuring unit 12 is placed on the blade of the plant.
  • the pressing unit 13 is inserted into the plant body and is powered on.
  • the environment detecting unit 11 adopts the integrated chip SHT75, and the integrated chip SHT75 converts the measured signal into digital data and transmits it to the single chip microcomputer 2, and the single chip microcomputer 2 saves the read digital data, and the light detecting is performed.
  • the unit 14 is composed of a dedicated sensor, and the signal collected by the sensor is amplified by the amplifying circuit 152 and transmitted to the single chip microcomputer 2.
  • the analog to digital conversion circuit in the single chip microcomputer 2 converts the detection signal into digital data and stores it, and the pressure measuring unit 13 uses a capillary glass electrode to pull the signal.
  • the instrument is composed, and the collected signal is amplified by the instrumentation amplifier and transmitted to the single-chip microcomputer 2.
  • the analog-to-digital conversion circuit in the single-chip microcomputer 2 converts the detection signal into digital data and saves it, and the temperature measuring unit 12 is formed by a thermistor, and the collected signal is passed through the instrumentation amplifier.
  • the analog-to-digital conversion circuit in the MCU 2 After amplification, it is transmitted to the MCU 2, and the analog-to-digital conversion circuit in the MCU 2 will detect No. converted into digital data and stored, the above data conversion circuit 41 by the USB interface chip (such as CH375) transferred to the computer 5 via the USB interface 42, stored and displayed by the computer 5 in the form of curves, to facilitate the growth of plants Analysis of the situation.
  • the USB interface chip such as CH375

Abstract

一种植物体内压力检测装置，包括依次连接的测量单元（1）、单片机（2）、DC—DC电源转换器（3）、USB接口单元（4）和计算机（5）。所述USB接口单元（4）包括依次双向数据连接的USB接口（42）和USB接口转换电路（41），所述USB接口（42）和计算机（5）双向连接，所述USB接口（42）将计算机（5）提供的电源通过DC—DC电源转换器（3）分别传输至测量单元（1）中的每个部件和单片机（2），所述测量单元（1）检测信号并传输至单片机（2），所述单片机（2）与USB接口单元（4）中的USB接口转换电路（41）双向数据连接。该装置结构简单、成本低、使用方便。

Description

说 明 书 一种植物体内压力检测装置
技术领域 本发明涉及一种检测装置， 尤其涉及一种植物体内压力检测装置。 背景技术 植物通过光合作用将吸收的光能转化为各种有机物， 为地球上的生物提 供能量， 从而能够保障各种生物的生存。 植物光合作用的强弱与其自身的生 长状况有着密切的关系。对植物体内水的压力的检测就像对人体的血压测量 一样， 因此， 研究植物的生长状况有着很重要的实际意义。
现有技术中比较先进的是美国 SEC的植物水势压力室 31 15 ,该产品为便 携式型号。 获得反映植物的整体水分生理状况， 广泛应用于植物生理学、 农 学、 灌溉、 作物栽培、 植物营养学等研究领域。 应用时， 将一片叶子或枝条 被放置在样品室中， 切口一端通过固定装置露在外面。 给样品室加压， 直到 压力超过植物材料的张力， 叶液开始从切口流出， 这一压力可以直接从压力 表读出植物体内的压力。 现有技术单一的只能测试植物体内水的压力， 不能 将植物自身温度、 环境温度、 环境湿度和光照度检测出来， 而且必须将植物 放置在样品室中才能进行检测， 使用复杂。
植物的生长受植物体内水的压力及自身温度的影响， 而植物体内水的压 力及自身温度受环境温度、 湿度以及光照度等因素的影响。 因此， 植物的生 长状况与植物体内水的压力、 自身温度、 环境温度、 环境湿度以及光照度有 着密切的关系。所以，若想研究植物的生长状况，就需要将植物的内部压力、 自身温度、 环境温度、 环境湿度和光照度检测出来。
发明内容 本发明的目的是针对现有技术的不足，提供了一种用于检测植物内部压 力、 自身温度、 环境温度、 环境湿度和光照度等各项信息的植物体内压力检 测装置， 该装置结构筒单、 成本低、 使用方便。
本发明所述的植物体内压力检测装置， 包括依次连接的测量单元、 单片 机、 DC-DC电源转换器、 USB接口单元和计算机， 所述 USB接口单元包括依 次双向数据连接的 USB接口和 USB接口转换电路，所述 USB接口与计算机双 向连接，所述 USB接口将计算机提供的电源通过 DC-DC电源转换器分别传输 至测量单元中的每个部件和单片机， 所述测量单元检测信号并传输至单片 机， 所述单片机与 USB接口单元中的 USB接口转换电路双向数据连接。
本发明的有益效果是：
采用本发明技术方案所述的植物体内压力检测装置， 该装置结构筒单、 成本低、 使用方便， 方便有效的检测植物内部压力、 自身温度、 环境温度、 环境湿度和光照度等各项信息。
在上述技术方案的基础上， 本发明还可以做如下改进。
进一步， 所述测量单元包括测温单元、 测压单元、 放大单元、 环境检测 单元和光照检测单元， 所述放大单元包括两个仪表放大器和一个放大电路， 所述测温单元和测压单元分别通过一个仪表放大器将检测到的信号传输至 单片机，所述环境检测单元检测环境中的温度和湿度并将检测到的信号或数 据传输至单片机， 所述光照检测单元将检测到的信号通过放大电路放大后传 输至单片机。
进一步，所述测压单元测量植物体内水的压力，将压力转换为电压信号， 并将电压信号经仪表放大器放大后传输至单片机。
进一步， 所述单片机包括至少三路转换单元和存储单元， 所述转换单元 接收测量单元中测温单元、 测压单元和光照检测单元传输的信号， 将信号转 换为数字数据并将数字数据保存至存储单元， 所述存储单元存储单片机读取 并转换的数据。
进一步， 所述单片机的转换单元为 A/D转换单元。 进一步， 所述光照检测单元由传感器构成。
进一步， 所述测温单元由热敏电阻或热电偶构成。
进一步， 所述测压单元由毛细玻璃电极拉拨仪构成。
附图说明
图 1为本发明所述装置的结构图。 具体实施方式 以下结合附图对本发明的原理和特征进行描述， 所举实例只用于解释本 发明， 并非用于限定本发明的范围。
本发明具体实施例 1所述的植物体内压力检测装置， 包括依次连接的测 量单元 1、 单片机 2、 DC-DC电源转换器 3、 USB接口单元 4和计算机 5 , 所 述 USB接口单元 4包括依次双向数据连接的 USB接口 42和 USB接口转换电 路 41 ,所述 USB接口 42与计算机 5双向连接，所述 USB接口 42将计算机提 供的电源通过 DC-DC电源转换器 3分别传输至测量单元 1中的每个部件和单 片机 2 , 所述测量单元 1 中的每个部件将检测到的信号传输至单片机 2 , 所 述单片机 2与 USB接口单元 4中的 USB接口转换电路 41双向数据连接， 所 述测量单元 1的各个部件检测被测植物体内水的压力、被测植物体的自身温 度、 环境温度、 环境湿度和光照度信号并放大， 继而将放大后的信号传输至 单片机 2 , 所述单片机 2接收测量单元 1传输至的信号， 将信号转换为数字 数据并存储，进一步将数字数据依次通过 USB接口单元 4中的 USB接口转换 电路 41和 USB接口 42传输至计算机 5中，所述计算机 5将数据整理并显示 出来， 所述计算机 5依次通过 USB接口单元 4中的 USB接口 42和 DC-DC电 源转换器 3将电流传输至测量单元 1中的每个部件和单片机 2中，所述 DC-DC 电源转换器 3可以将固定的电压转换成为测量单元 1中的每个部件和单片机 2所需的不同电压。
所述测量单元 1包括测温单元 12、 测压单元 13、 放大单元 15、 环境检 测单元 11和光照检测单元 14, 所述放大单元 15包括两个仪表放大器 151 和一个放大电路 152, 所述测温单元 12和测压单元 13分别将检测到的信号 通过一个仪表放大器 151放大后传输至单片机 2,所述环境检测单元 11检测 环境中的温度和湿度并将检测到的信号传输至单片机 2, 所述光照检测单元 14通过放大电路 152将检测到的信号传输至单片机 2。
所述测压单元 13测量植物体内水的压力， 将压力转换为电压信号， 并 将电压信号通过仪表放大器 151传输至单片机 2。
所述单片机 2包括至少三路转换单元和存储单元， 所述转换单元接收测 量单元 1中测温单元 12、测压单元 13和光照检测单元 14传输的信号，将信 号转换为数字数据并将数字数据保存至存储单元，所述存储单元存储单片机 读取并转换的数据。
所述单片机 2的转换单元为 A/D转换单元。
所述光照检测单元 14由传感器构成。
所述测温单元 12由热敏电阻构成。
所述测压单元 13由毛细玻璃电极拉拨仪构成。
具体测量时， 首先将各个单元按照装置结构配置好，将环境检测单元 11 放置于被测植物附近的空气中， 光照检测单元 14放置植物环境内， 测温单 元 12置于植物的叶片上， 测压单元 13插于植物体内， 并接通电源， 环境检 测单元 11采用集成芯片 SHT75, 集成芯片 SHT75将测量的信号转换为数字 数据传输至单片机 2, 单片机 2将读取的数字数据保存， 光照检测单元 14 由专用传感器构成，传感器采集的信号经放大电路 152放大后传输至单片机 2, 单片机 2 内的模数转换电路将检测信号转换为数字数据并保存， 测压单 元 13采用毛细玻璃电极拉拨仪构成， 采集的信号经仪表放大器放大后传输 至单片机 2,单片机 2内的模数转换电路将检测信号转换为数字数据并保存， 测温单元 12采用热敏电阻构成， 采集的信号经仪表放大器放大后传输至单 片机 2, 单片机 2内的模数转换电路将检测信号转换为数字数据并保存， 以 上数据都由 USB接口转换电路 41芯片 （如 CH375 )经 USB接口 42传送到 计算机 5, 由计算机 5储存并以曲线的形式显示出来， 方便于对植物的生长 状况的分析。
以上仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明的精 神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求 书
1. 一种植物体内压力检测装置， 其特征在于， 包括依次连接的测量单 元、 单片机、 DC-DC电源转换器、 USB接口单元和计算机， 所述 USB接口单 元包括依次双向数据连接的 USB接口和 USB接口转换电路，所述 USB接口与 计算机双向连接， 所述 USB接口将计算机提供的电源通过 DC-DC电源转换器 分别传输至测量单元中的每个部件和单片机， 所述测量单元检测信号并传输 至单片机，所述单片机与 USB接口单元中的 USB接口转换电路双向数据连接。
2. 按照权利要求 1所述的植物体内压力检测装置， 其特征在于， 所述 测量单元包括测温单元、 测压单元、 放大单元、 环境检测单元和光照检测单 元， 所述放大单元包括两个仪表放大器和一个放大电路， 所述测温单元和测 压单元分别通过一个仪表放大器将检测到的信号传输至单片机，所述环境检 测单元检测环境中的温度和湿度并将检测到的信号传输至单片机， 所述光照 检测单元将检测到的信号通过放大电路放大后传输至单片机。
3. 按照权利要求 2所述的植物体内压力检测装置， 其特征在于， 所述 环境检测单元检测环境中的温度和湿度并将检测到的数据传输至单片机。
4. 按照权利要求 2或 3所述的植物体内压力检测装置， 其特征在于， 所述测压单元测量植物体内水的压力， 将压力转换为电压信号， 并将电压信 号经仪 文大器放大后传输至单片机。
5. 按照权利要求 4所述的植物体内压力检测装置， 其特征在于， 所述 单片机包括至少三路转换单元和存储单元， 所述转换单元接收测量单元中测 温单元、 测压单元和光照检测单元传输的信号， 将信号转换为数字数据并将 数字数据保存至存储单元， 所述存储单元存储单片机读取并转换的数据。
6. 按照权利要求 5所述的植物体内压力检测装置， 其特征在于， 所述 单片机的转换单元为 A/D转换单元。
7. 按照权利要求 6所述的植物体内压力检测装置， 其特征在于， 所述 光照检测单元由传感器构成。
8. 按照权利要求 1、 2、 3、 5、 6和 7任一项所述的植物体内压力检测 装置， 其特征在于， 所述测温单元由热敏电阻构成。
9.按照权利要求 1、 2、 3、 5、 6和 7任一项所述的植物体内压力检测装 置， 其特征在于， 所述测温单元由热电偶构成。
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